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$239+ Cheap flights from Rhode Island to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
PVD — OPO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Rhode Island to Porto

Keep the following information in mind while searching for Rhode Island to Porto flight deals. Data was last updated September 11, 2025.

Round-trip from

$419
(United Airlines)

One-way from

$239
(SmartFares)

Popular in

June

Cheapest in

January

Average price

$665
From Rhode Island to Porto
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One-way flight from Rhode Island to Porto
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Highest demand for flights based on searches. 15% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Rhode Island to Porto

Cheapest flights from Rhode Island to Porto
Explore the most affordable flight options available from Rhode Island to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:40 amBOS - OPO
2 stops18h 50mUnited Airlines
Tue 12/166:00 amOPO - BOS
1 stop12h 25mUnited Airlines
Deal found 9/10$419
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/54:20 pmBOS - OPO
1 stop18h 05mUnited Airlines
Wed 11/1212:35 pmOPO - BOS
2 stops25h 55mUnited Airlines
Deal found 9/11$420
This Booking.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:05 pmBOS - OPO
1 stop22h 15mMultiple Airlines
Thu 11/2712:05 pmOPO - BOS
1 stop13h 15mMultiple Airlines
Deal found 9/9$421
This KAYAK deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:40 pmBOS - OPO
1 stop22h 00mLufthansa
Mon 11/104:15 pmOPO - BOS
1 stop26h 10mLufthansa
Deal found 9/10$422
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/145:50 pmBOS - OPO
1 stop12h 25mMultiple Airlines
Wed 10/2212:20 pmOPO - BOS
1 stop12h 35mMultiple Airlines
Deal found 9/10$423
This KAYAK deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:50 pmBOS - OPO
1 stop14h 50mSWISS
Fri 11/1412:50 pmOPO - BOS
1 stop12h 30mSWISS
Deal found 9/9$424
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:50 pmBOS - OPO
1 stop14h 50mMultiple Airlines
Sun 11/96:15 amOPO - BOS
1 stop17h 20mMultiple Airlines
Deal found 9/10$425
This KAYAK deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:40 pmBOS - OPO
1 stop11h 10mLufthansa
Thu 11/136:00 amOPO - BOS
2 stops17h 35mLufthansa
Deal found 9/11$426
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/149:40 pmBOS - OPO
2 stops16h 25mSWISS
Tue 10/218:40 amOPO - BOS
1 stop16h 15mSWISS
Deal found 9/10$427
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:30 amBOS - OPO
2 stops20h 25mUnited Airlines
Wed 11/126:00 amOPO - BOS
1 stop12h 25mUnited Airlines
Deal found 9/9$428
This CrystalTravel deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:05 pmBOS - OPO
1 stop22h 15mMultiple Airlines
Wed 11/1912:10 pmOPO - BOS
1 stop13h 10mMultiple Airlines
Deal found 9/11$429
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/611:00 pmBOS - OPO
1 stop28h 00mMultiple Airlines
Wed 10/1510:00 pmOPO - BOS
1 stop28h 15mMultiple Airlines
Deal found 9/10$430

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rhode Island to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Rhode Island to Porto that are best for you.

Fly from

Rhode Island

Fly to

Porto

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 11/28

12:25 pm-9:30 am

2 stops16h 05m

Porto

Wed 12/17

6:00 am-1:25 pm

1 stop12h 25m

$419

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 2/9

4:15 pm-11:40 am

1 stop14h 25m

Porto

Thu 2/26

12:35 pm-9:24 am

2 stops25h 49m

$420

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 2/11

4:15 pm-3:25 pm

1 stop18h 10m

Porto

Thu 2/26

12:35 pm-11:54 pm

2 stops16h 19m

$420

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 10/27

5:30 am-9:30 am

2 stops24h 00m

Porto

Mon 11/3

12:35 pm-10:34 am

2 stops26h 59m

$428

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 11/11

2:21 pm-9:30 am

2 stops14h 09m

Porto

Sat 11/22

12:35 pm-12:45 am

2 stops17h 10m

$428

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 10/7

8:05 pm-11:20 pm

1 stop22h 15m

Porto

Wed 11/19

12:10 pm-8:20 pm

1 stop13h 10m

$429

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 10/7

7:40 pm-7:30 pm

1 stop18h 50m

Porto

Wed 11/19

12:25 pm-10:47 pm

2 stops15h 22m

$431

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 11/9

6:25 pm-9:30 am

1 stop10h 05m

Porto

Sat 11/15

12:30 pm-1:25 pm

1 stop29h 55m

$449

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 9/21

9:40 pm-6:15 pm

1 stop15h 35m

Porto

Mon 11/10

12:30 pm-1:25 pm

1 stop29h 55m

$453

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/27

9:50 pm-11:10 am

1 stop32h 20m

Porto

Sun 11/30

6:35 pm-8:20 pm

2 stops54h 45m

$460

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 42 results
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Best time to book a flight from Rhode Island to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Rhode Island with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Rhode Island to Porto

What is the cheapest time of day to fly from RI to OPO?

Find hourly flight availability from Rhode Island to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Rhode Island to Porto as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Rhode Island to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto from Rhode Island?

    Located just 6.8 mi from the city center, Porto (OPO) is the airport most travelers will use when flying to Porto from Rhode Island.

  • How long is the flight from Rhode Island to Porto?

    Airlines like United Airlines and Delta fly from Rhode Island to Porto in about 16h 05m. The time it takes to get you to your destination can typically vary by up to 7h 50m. Airlines will cover a distance of 3134 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Rhode Island to Porto one-way?

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $239. United Airlines flights start at $545 while deals on Delta start at $552 one-way.

  • Can I find deals for flights from Rhode Island to Porto that include hotel bookings?

    Yes. In addition to deals on Rhode Island to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rhode Island to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rhode Island to Porto.

  • Can I find deals for business class flights from Rhode Island to Porto?

    Yes. Cheapflights offers flight deals from Rhode Island to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Rhode Island to Porto?

    Currently, January is the cheapest month in which you can book a flight from Rhode Island to Porto (average of $523). Flying from Rhode Island to Porto in June is currently the most expensive (average of $1,027). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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